---
name: legal-client-engagement-letter
description: Use when asked to write or explain a legal client engagement letter — formally defining the scope, fees, and terms of a lawyer-client representation — following a legal-conflict-of-interest-check.
---

# Legal Client Engagement Letter

An engagement letter formally defines the scope, fees, and terms of a
lawyer-client (or firm-client) representation — establishing a clear,
mutual understanding of the relationship before work begins, typically
following a [[legal-conflict-of-interest-check]] confirming the
representation can be ethically accepted.

## Common contents

- **Scope of representation** — precisely what matter(s) the engagement
  covers, and (just as importantly) what it doesn't cover.
- **Fee arrangement** — hourly rates, flat fee, contingency, or another
  structure, along with billing frequency and expectations.
- **Client responsibilities** — what the client is expected to provide
  (information, documents, timely decisions) for the representation to
  proceed effectively.
- **Termination terms** — how either party can end the representation,
  and what happens to unbilled work or unresolved matters at that
  point.
- **Confidentiality and conflicts** — confirmation of the
  attorney-client privilege's scope and any relevant conflict waivers.

## Why scope definition matters so much

A precisely defined scope protects both parties: the client knows
exactly what they're paying for and what falls outside the engagement
(and would need a separate arrangement), and the lawyer/firm has a
clear boundary for what work is actually covered — vague scope is a
common source of billing disputes and client dissatisfaction.

## Common pitfalls

- **Vague or overly broad scope of representation** — this creates
  ambiguity about what work is covered, leading to disputes when
  additional issues arise that the client assumed were included.
- **Unclear fee arrangements** — a client surprised by billing they
  didn't expect (because the fee structure wasn't clearly explained
  upfront) is a common source of dissatisfaction and disputes.
- **Skipping the engagement letter for a "quick" or informal matter** —
  even brief engagements benefit from a clear written understanding;
  informal engagements are a common source of later disputes about what
  was actually agreed.
- **Not updating the engagement letter as scope changes** — a matter
  that expands significantly beyond its original scope should be
  reflected in an updated agreement, not left to the original
  (now-outdated) letter.

## Learn more

- [[legal-conflict-of-interest-check]] for the required check that typically precedes issuing an engagement letter.
- [[legal-case-management]] for tracking the engagement once it's underway.
- [[statement-of-work]] for a related, non-legal-specific document defining scope and terms.